CVE-2026-39880
Remnawave Backend has a race condition in HWID device limit allows bypassing max devices
- State
- Published
- Severity
- 5.0 Medium
- Published
- Apr 8, 2026
- Updated
- Apr 10, 2026
- Reserved
- Apr 7, 2026
Description
Remnawave Backend is the backend for the Remnawave proxy and user management solution. Prior to 2.7.5, a glitch in the HWID device registration logic allows an authenticated user to bypass the configured limit for HWID devices and register more devices than expected, allowing them to resell subscriptions and consume excessive traffic. This vulnerability is fixed in 2.7.5.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.0 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N | GitHub_M |
Weaknesses
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Products
| Product | Versions |
|---|---|
backendremnawave |
|
References
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